Hannover 2016 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 14: Posters 3: Novelties in Molecular Physics: Theory of Molecular Dynamics, Collisions and Energy Transfer, and Experimental Techniques
MO 14.5: Poster
Mittwoch, 2. März 2016, 16:30–19:00, Empore Lichthof
Charge transfer reactions with Ar+ in its ground state — Tim Michaelsen, •Björn Bastian, Atilay Ayasli, Jennifer Meyer, Eduardo Carrascosa, and Roland Wester — Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Austria
The crossed-beam technique has become the method of choice for the analysis of reaction dynamics [1] as it allows to precisely assess the complete kinematics of both reactants and products. In the last decade, it could be extended from neutral partners to ion neutral reactions [2]. The combination with three-dimensional velocity map imaging has allowed us to obtain energy- and angle-differential cross sections for the Ar++N2 charge transfer reaction [3], opposing previous experimental results and in agreement with theoretical predictions [4]. Recently, a radio-frequency ion trap has been added to our setup that allows to achieve an improved energy resolution of the ion beam and, more notably, quenching of reactant ions to their ground state.
Here, we present the status of experiments that aim for fully state-to-state resolved differential cross sections of the charge transfer reaction involving the Ar+ ground state into the different vibrational levels of the N2+ product. Further, reactions with other neutral partners as O2 and CO will be considered.
[1] Y. T. Lee. Science 236 (4803), 793 (1987). [2] J. Mikosch et al. Phys. Chem. Chem. Phys. 8, 2990 (2006). [3] S. Trippel et al. Phys. Rev. Lett. 110, 163201 (2013). [4] R. Candori et al. J. Chem. Phys. 115, 8888 (2001).